DUBLIN - Ireland said on Thursday that the United Kingdom had failed to supply credible Brexit proposals, adding that there had been no breakthrough at talks last night with the Northern Irish party which props up Prime Minister Boris Johnson's government.

Irish foreign minister Simon Coveney said there was growing frustration in the European Union that London had not yet tabled proposals on an alternative to the Irish border backstop.

"We need to get credible proposals that we simply haven't seen yet," he said, adding there had been no breakthrough at talks overnight.

Irish Prime Minister Leo Varadkar met Arlene Foster, the leader of Northern Ireland's Democratic Unionist Party in Dublin for talks on Wednesday.

Foster said a deal could be secured for an orderly British exit from the European Union if flexibility is shown by all sides.

(Reporting by Graham Fahy, editing by Andrew MacAskill and Guy Faulconbridge) ((guy.faulconbridge@thomsonreuters.com; 07825218698;))